How Testosterone is supplied
Testosterone is supplied as an oil solution for intramuscular injection, supplied as single esters or blends. Common esters: propionate, isocaproate, enanthate, cypionate, undecanoate. Reported half-life: Determined entirely by the ester. Propionate roughly 0.8 days; enanthate about 4.5 days; cypionate about 5 days; undecanoate substantially longer. Storage: Room temperature, out of direct light. Crystallisation in cold conditions is a physical change, not degradation, and redissolves with gentle warming.
Presentation
Testosterone is supplied as an oil solution for intramuscular injection, supplied as single esters or blends. Common esters: propionate, isocaproate, enanthate, cypionate, undecanoate. Reported half-life: Determined entirely by the ester. Propionate roughly 0.8 days; enanthate about 4.5 days; cypionate about 5 days; undecanoate substantially longer. Storage: Room temperature, out of direct light. Crystallisation in cold conditions is a physical change, not degradation, and redissolves with gentle warming.
Why presentation changes the comparison
Cost per milligram is calculated from the strength printed on the listing. Where a listing states no strength the column is left blank rather than estimated. The ester changes how much base compound sits in a stated strength, so two Testosterone listings at the same milligram figure are not always equivalent.
| Listing | Strength | Price | Cost per mg | Stock |
|---|---|---|---|---|
| Quanta Pharma Fem-Test | - | £18 | - | in stock |
| Quanta Pharma Testosterone Propionate | - | £25 | - | in stock |
| Quanta Pharma Testosterone Isocaproate | - | £30 | - | in stock |
| Quanta Pharma Testosterone Enanthate | - | £34 | - | in stock |
| Quanta Pharma Test 400 | - | £38 | - | in stock |
| Quanta Pharma Sustanon 250 | - | £29 | - | out of stock |
| Quanta Testosterone Undecanoate (TRT Choice) | - | £30 | - | out of stock |
| Quanta Pharma Test 350 | - | £32 | - | out of stock |
| Quanta Pharma Testosterone Cypionate | - | £32 | - | out of stock |
Quanta Pharma Fem-Testin stock£18
Quanta Pharma Testosterone Propionatein stock£25
Quanta Pharma Testosterone Isocaproatein stock£30
Quanta Pharma Testosterone Enanthatein stock£34
Quanta Pharma Test 400in stock£38
Quanta Pharma Sustanon 250out of stock£29
Quanta Testosterone Undecanoate (TRT Choice)out of stock£30
Quanta Pharma Test 350out of stock£32
Quanta Pharma Testosterone Cypionateout of stock£32
Availability checked 2026-09-08. The product page carries live stock.